My C20XE has an early bottom end, merged with a late cylinder head (Motronic 2.8 ecu and wiring loom with all sensors). The engine has never run properly during idle. When on cruise though it works sweet, The symptoms I have are:

Sometimes the engine starts on second crank

Rough idle

When it starts it sticks at around 3000 rpm then drops to 1000 ish after a few minutes

Smells fuel at exhaust

I have replaced almost all sensors, took ecu wiring out...

C20XE early engine block with late valve head]]>27Astra G 1.8 Power steering fluid typeSat, 16 Feb 2019 13:38:13 +0000https://www.mk3oc.com/forum/threads/astra-g-1-8-power-steering-fluid-type.82407/
https://www.mk3oc.com/forum/threads/astra-g-1-8-power-steering-fluid-type.82407/invalid@example.com (Cuda)CudaHi guys, Yeah I know I know I'm back calm down calm down we'll do the huggin bit later obviously not been on for a while wasn't even sure I was on the right site when I logged on it seems to have changed a tad, I need some help as I'm currently getting nowhere fast. I bought the wife an Astra G 1.8 16 valve some months back nice car bought it from an old chap really low miles and been well looked after but a few weeks ago the electric power steering pump spat its dummy out then...

Astra G 1.8 Power steering fluid type]]>6Opel Astra 1.6 Ecotech GearboxSat, 16 Feb 2019 13:37:49 +0000https://www.mk3oc.com/forum/threads/opel-astra-1-6-ecotech-gearbox.82420/
https://www.mk3oc.com/forum/threads/opel-astra-1-6-ecotech-gearbox.82420/invalid@example.com (ClenMeier)ClenMeierHi! can somebody please explain me. How to remove the gearbox. Step by Step.
Thanks]]>1Astra G Electric Power steering FixMon, 11 Feb 2019 18:29:55 +0000https://www.mk3oc.com/forum/threads/astra-g-electric-power-steering-fix.82417/
https://www.mk3oc.com/forum/threads/astra-g-electric-power-steering-fix.82417/invalid@example.com (Cuda)CudaHi all, I'm going to post this here on the MK3 site as I know there's one or two that have or 'have had the MK4 Astra G and as this is a common problem to the model I'm hoping it will help somebody in the future. My power steering pump decided to spit its dummy out just over a month ago and began making strange noises shortly afterwards it well and truly threw its toys out of the pram and stopped working altogether. The wife was out in it at the time and had to get the AA to bring her back...

Astra G Electric Power steering Fix]]>0red and white plug ecu pinout diagram with colours for astra maybeSun, 10 Feb 2019 14:39:20 +0000https://www.mk3oc.com/forum/threads/red-and-white-plug-ecu-pinout-diagram-with-colours-for-astra-maybe.82393/
https://www.mk3oc.com/forum/threads/red-and-white-plug-ecu-pinout-diagram-with-colours-for-astra-maybe.82393/invalid@example.com (x16xe mad)x16xe madhi all
has anyone here got any info on the wiring diagram for the ecu with the red and white plugs as I want to fit a standalone ecu inside a dead one I have so I can just fit it to my Astra mk3 without cutting the loom. It seems that this ecu was only put on 14 and 16 16v versions also on corsa tigra and maybe Vectra, plug diagrams would be a very great help
also am I right in thinking the crank and cam sensors are of the hall effect type
thanks people]]>5Calibra turbo steering wheel in Astra mk3Tue, 05 Feb 2019 20:36:36 +0000https://www.mk3oc.com/forum/threads/calibra-turbo-steering-wheel-in-astra-mk3.82391/
https://www.mk3oc.com/forum/threads/calibra-turbo-steering-wheel-in-astra-mk3.82391/invalid@example.com (Varnis9)Varnis9Hey guys

I got this REALLY annoying idle issue.
It occurs mostly from cold and there are several symptoms to it.

When I start it in the morning, it revs to around 1.5-2k then after a couple of seconds it settles down to 600 ish and stays there. As I drive off I can feel the throttle sticking open, and as I come to a stop at a juction and press the clutch down, it revs up to 2ish or sometimes it’s up and down the revs for a few seconds, then settles back down to 600-700...

Got an Astra 5dr hatch converted to c20xe, I have kept the exhaust system from the old c14se engine with the single back box. Will the single back box cause any running issues on the c20xe?

P.S. The car has also been de-cat

c20xe back box:

c14se back box:

]]>42.5 v6 vectra engine into 2ltr ecotec Astra wiring diagram neededMon, 28 Jan 2019 21:16:33 +0000https://www.mk3oc.com/forum/threads/2-5-v6-vectra-engine-into-2ltr-ecotec-astra-wiring-diagram-needed.82380/
https://www.mk3oc.com/forum/threads/2-5-v6-vectra-engine-into-2ltr-ecotec-astra-wiring-diagram-needed.82380/invalid@example.com (TriggDoad)TriggDoadHi all need some help I have as above stated a Astra gsi phase 2 with the vectra engine 2.5 v6 already in it but it is a total mess I'm in the process of securing a complete low mileage vectra so I can start again theres just been to many people messed about with the wiring over the years and can't currently get it to run or make heads or tales of it so think it would be easier to start again if Any one on here can make a loom or have a detailed link to do so I would give it ago myself or...

Have you guys dealt with a leaking hydraulic system on the convertible top?

I'm noticing some fluid seeping and it's ending up under the rear seat cushion.
What would be a possible place to check for leaks and how much trouble is it to fix?

I also had a look at the fluid level gauge in the right side of the boot and it's definitely low. (below Min line with top up)

My current idea is to just top it up until I can get...

Hydraulic leaks on 95 Astra Cabrio]]>0Central lockingSun, 13 Jan 2019 14:21:03 +0000https://www.mk3oc.com/forum/threads/central-locking.82382/
https://www.mk3oc.com/forum/threads/central-locking.82382/invalid@example.com (oldwheels)oldwheelsLooking for advice, my 3 door Astra is a economy model and has no central locking. I would like to rectify this and have seen many kits on ebay but am unsure which to choose. I would like a good quality kit as it is security, any ideas? thanks]]>52.5 v6 conversion wiring nightmare need helpSat, 05 Jan 2019 19:54:16 +0000https://www.mk3oc.com/forum/threads/2-5-v6-conversion-wiring-nightmare-need-help.82379/
https://www.mk3oc.com/forum/threads/2-5-v6-conversion-wiring-nightmare-need-help.82379/invalid@example.com (TriggDoad)TriggDoadHi all new to the forum this is my first mk3 after years of wanting one had plenty mk4 gsi sri turbos mk5 vxrs but always had a softy for a mk3 so today I was lucky enough to pick up the latest project.

White phase 2 paintwork is ruff and needs a couple bits of welding but nothing major for a 1998 car. The main issue is the wiring it is a total nightmare wires cut here there and everywhere spliced in to random things same inside the car just a mish mash of wires here there and everywhere...

2.5 v6 conversion wiring nightmare need help]]>3Engine MountsMon, 31 Dec 2018 13:19:29 +0000https://www.mk3oc.com/forum/threads/engine-mounts.82376/
https://www.mk3oc.com/forum/threads/engine-mounts.82376/invalid@example.com (astranaut)astranautI seem to have an inordinate amount of movement in my gear stick when accelerating or letting off, which I'm guessing is down to a worn mount somewhere, however none of them look obviously knackered, which one is best to go for first or how do I check them? Also, where's the best place to get them for a C14NZ? Never had to change one before but 10 years and 80k it's probably about time in fairness ]]>31.6 8valve cold problemsSat, 29 Dec 2018 20:45:38 +0000https://www.mk3oc.com/forum/threads/1-6-8valve-cold-problems.82350/
https://www.mk3oc.com/forum/threads/1-6-8valve-cold-problems.82350/invalid@example.com (djwilde69)djwilde69When my car has been parked up and left to go cold it really struggles to start and then miss fires like hell,
All plug are ok,
Coil pack was changed for a good working one,
Temp sensor with 2 pins has been changed]]>6c14se instrumental panel connectorsWed, 26 Dec 2018 11:59:02 +0000https://www.mk3oc.com/forum/threads/c14se-instrumental-panel-connectors.82368/
https://www.mk3oc.com/forum/threads/c14se-instrumental-panel-connectors.82368/invalid@example.com (Varnis9)Varnis9Hello guys

Need someone with knowledge or access to manuals to fill in the list of wires on the 8 pin instrumental panel connector for c14se engine, 5dr, hatch? Please see photos attached...

Cheers]]>3c20xe fuel pumpMon, 24 Dec 2018 20:22:48 +0000https://www.mk3oc.com/forum/threads/c20xe-fuel-pump.82366/
https://www.mk3oc.com/forum/threads/c20xe-fuel-pump.82366/invalid@example.com (Varnis9)Varnis9Is it normal that I get 9-9.5v on the fuel pump during cranking? Have been having starting issues, not enough pressure is pushed on the fuel rail (confirmed using fuel gauge). Most of the times car starts on second key turn. Is the low volt on fuel pump normal?